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A.
6×+5=26-×
6x + x = 26 - 5
7x = 21
x = 3
B.2-4×=3
-4x = 3 - 2
-4x = 1
x = -1/4
C.×-12=2×+36
x - 2x = 36 + 12
-x = 48
x = - 48
D.-5×-4×+10=1
-9x = 1 - 10
-9x = -9
x = 1
E.2+ ×/4=5
8 + x = 5
x = -3